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ifconfig.c revision 1.195
      1 /*	$NetBSD: ifconfig.c,v 1.195 2008/05/07 19:55:24 dyoung Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * Copyright (c) 1983, 1993
     35  *	The Regents of the University of California.  All rights reserved.
     36  *
     37  * Redistribution and use in source and binary forms, with or without
     38  * modification, are permitted provided that the following conditions
     39  * are met:
     40  * 1. Redistributions of source code must retain the above copyright
     41  *    notice, this list of conditions and the following disclaimer.
     42  * 2. Redistributions in binary form must reproduce the above copyright
     43  *    notice, this list of conditions and the following disclaimer in the
     44  *    documentation and/or other materials provided with the distribution.
     45  * 3. Neither the name of the University nor the names of its contributors
     46  *    may be used to endorse or promote products derived from this software
     47  *    without specific prior written permission.
     48  *
     49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     59  * SUCH DAMAGE.
     60  */
     61 
     62 #include <sys/cdefs.h>
     63 #ifndef lint
     64 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     65 	The Regents of the University of California.  All rights reserved.\n");
     66 #endif /* not lint */
     67 
     68 #ifndef lint
     69 #if 0
     70 static char sccsid[] = "@(#)ifconfig.c	8.2 (Berkeley) 2/16/94";
     71 #else
     72 __RCSID("$NetBSD: ifconfig.c,v 1.195 2008/05/07 19:55:24 dyoung Exp $");
     73 #endif
     74 #endif /* not lint */
     75 
     76 #include <sys/param.h>
     77 #include <sys/socket.h>
     78 #include <sys/ioctl.h>
     79 
     80 #include <net/if.h>
     81 #include <net/if_dl.h>
     82 #include <net/if_media.h>
     83 #include <net/if_ether.h>
     84 #include <netinet/in.h>		/* XXX */
     85 #include <netinet/in_var.h>	/* XXX */
     86 
     87 #include <netdb.h>
     88 
     89 #include <sys/protosw.h>
     90 
     91 #include <assert.h>
     92 #include <ctype.h>
     93 #include <err.h>
     94 #include <errno.h>
     95 #include <stdbool.h>
     96 #include <stddef.h>
     97 #include <stdio.h>
     98 #include <stdlib.h>
     99 #include <string.h>
    100 #include <unistd.h>
    101 #include <ifaddrs.h>
    102 #include <util.h>
    103 
    104 #include "extern.h"
    105 
    106 #ifndef INET_ONLY
    107 #include "af_atalk.h"
    108 #include "af_iso.h"
    109 #endif /* ! INET_ONLY */
    110 #include "af_inet.h"
    111 #ifdef INET6
    112 #include "af_inet6.h"
    113 #endif /* INET6 */
    114 
    115 #include "agr.h"
    116 #include "carp.h"
    117 #include "ieee80211.h"
    118 #include "tunnel.h"
    119 #include "vlan.h"
    120 #include "parse.h"
    121 #include "env.h"
    122 
    123 int	setaddr, doalias;
    124 int	clearaddr;
    125 int	newaddr = -1;
    126 int	check_up_state = -1;
    127 int	bflag, dflag, hflag, lflag, mflag, sflag, uflag, vflag, zflag;
    128 #ifdef INET6
    129 int	Lflag;
    130 #endif
    131 
    132 /*
    133  * Media stuff.  Whenever a media command is first performed, the
    134  * currently select media is grabbed for this interface.  If `media'
    135  * is given, the current media word is modifed.  `mediaopt' commands
    136  * only modify the set and clear words.  They then operate on the
    137  * current media word later.
    138  */
    139 int	media_current;
    140 int	mediaopt_set;
    141 int	mediaopt_clear;
    142 
    143 void	check_ifflags_up(const char *);
    144 
    145 int 	notealias(prop_dictionary_t, prop_dictionary_t);
    146 int 	notrailers(prop_dictionary_t, prop_dictionary_t);
    147 int 	setifaddr(prop_dictionary_t, prop_dictionary_t);
    148 int 	setifdstormask(prop_dictionary_t, prop_dictionary_t);
    149 int 	setifflags(prop_dictionary_t, prop_dictionary_t);
    150 static int	setifcaps(prop_dictionary_t, prop_dictionary_t);
    151 int 	setifbroadaddr(prop_dictionary_t, prop_dictionary_t);
    152 static int 	setifmetric(prop_dictionary_t, prop_dictionary_t);
    153 static int 	setifmtu(prop_dictionary_t, prop_dictionary_t);
    154 int 	setifnetmask(prop_dictionary_t, prop_dictionary_t);
    155 int	setifprefixlen(prop_dictionary_t, prop_dictionary_t);
    156 int	setmedia(prop_dictionary_t, prop_dictionary_t);
    157 int	setmediamode(prop_dictionary_t, prop_dictionary_t);
    158 int	setmediaopt(prop_dictionary_t, prop_dictionary_t);
    159 int	unsetmediaopt(prop_dictionary_t, prop_dictionary_t);
    160 int	setmediainst(prop_dictionary_t, prop_dictionary_t);
    161 static int	clone_command(prop_dictionary_t, prop_dictionary_t);
    162 static void	do_setifpreference(prop_dictionary_t);
    163 
    164 static int no_cmds_exec(prop_dictionary_t, prop_dictionary_t);
    165 static int media_status_exec(prop_dictionary_t, prop_dictionary_t);
    166 
    167 int	carrier(prop_dictionary_t);
    168 void	printall(const char *, prop_dictionary_t);
    169 int	list_cloners(prop_dictionary_t, prop_dictionary_t);
    170 void 	status(const struct sockaddr_dl *, prop_dictionary_t,
    171     prop_dictionary_t);
    172 void 	usage(void);
    173 
    174 void	print_media_word(int, const char *);
    175 void	process_media_commands(prop_dictionary_t);
    176 void	init_current_media(prop_dictionary_t, prop_dictionary_t);
    177 
    178 /* Known address families */
    179 static const struct afswtch afs[] = {
    180 	  {.af_name = "inet", .af_af = AF_INET, .af_status = in_status,
    181 	   .af_addr_commit = commit_address}
    182 
    183 #ifdef INET6
    184 	, {.af_name = "inet6", .af_af = AF_INET6, .af_status = in6_status,
    185 	   .af_getaddr = in6_getaddr, .af_getprefix = in6_getprefix,
    186 	   .af_difaddr = SIOCDIFADDR_IN6, .af_aifaddr = SIOCAIFADDR_IN6,
    187 	/* Deleting the first address before setting new one is
    188 	 * not prefered way in this protocol.
    189 	 */
    190 	   .af_gifaddr = 0, .af_ridreq = &in6_ridreq, .af_addreq = &in6_addreq}
    191 #endif
    192 
    193 #ifndef INET_ONLY	/* small version, for boot media */
    194 	, {.af_name = "atalk", .af_af = AF_APPLETALK, .af_status = at_status,
    195 	   .af_getaddr = at_getaddr, NULL, .af_difaddr = SIOCDIFADDR,
    196 	   .af_aifaddr = SIOCAIFADDR, .af_gifaddr = SIOCGIFADDR,
    197 	   .af_ridreq = &at_addreq, .af_addreq = &at_addreq}
    198 	, {.af_name = "iso", .af_af = AF_ISO, .af_status = iso_status,
    199 	   .af_getaddr = iso_getaddr, NULL, .af_difaddr = SIOCDIFADDR_ISO,
    200 	   .af_aifaddr = SIOCAIFADDR_ISO, .af_gifaddr = SIOCGIFADDR_ISO,
    201 	   .af_ridreq = &iso_ridreq, .af_addreq = &iso_addreq}
    202 #endif	/* INET_ONLY */
    203 
    204 	, {.af_name = NULL}	/* sentinel */
    205 };
    206 
    207 #define	IFKW(__word, __flag)					\
    208 {								\
    209 	.k_word = (__word), .k_neg = true, .k_type = KW_T_NUM,	\
    210 	.k_num = (__flag),					\
    211 	.k_negnum = -(__flag)					\
    212 }
    213 
    214 struct kwinst ifflagskw[] = {
    215 	  IFKW("arp", IFF_NOARP)
    216 	, IFKW("debug", IFF_DEBUG)
    217 	, IFKW("link0", IFF_LINK0)
    218 	, IFKW("link1", IFF_LINK1)
    219 	, IFKW("link2", IFF_LINK2)
    220 	, {.k_word = "down", .k_type = KW_T_NUM, .k_num = -IFF_UP}
    221 	, {.k_word = "up", .k_type = KW_T_NUM, .k_num = IFF_UP}
    222 };
    223 
    224 struct kwinst ifcapskw[] = {
    225 	  IFKW("ip4csum-tx",	IFCAP_CSUM_IPv4_Tx)
    226 	, IFKW("ip4csum-rx",	IFCAP_CSUM_IPv4_Rx)
    227 	, IFKW("tcp4csum-tx",	IFCAP_CSUM_TCPv4_Tx)
    228 	, IFKW("tcp4csum-rx",	IFCAP_CSUM_TCPv4_Rx)
    229 	, IFKW("udp4csum-tx",	IFCAP_CSUM_UDPv4_Tx)
    230 	, IFKW("udp4csum-rx",	IFCAP_CSUM_UDPv4_Rx)
    231 	, IFKW("tcp6csum-tx",	IFCAP_CSUM_TCPv6_Tx)
    232 	, IFKW("tcp6csum-rx",	IFCAP_CSUM_TCPv6_Rx)
    233 	, IFKW("udp6csum-tx",	IFCAP_CSUM_UDPv6_Tx)
    234 	, IFKW("udp6csum-rx",	IFCAP_CSUM_UDPv6_Rx)
    235 	, IFKW("ip4csum",	IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx)
    236 	, IFKW("tcp4csum",	IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx)
    237 	, IFKW("udp4csum",	IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx)
    238 	, IFKW("tcp6csum",	IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx)
    239 	, IFKW("udp6csum",	IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx)
    240 	, IFKW("tso4",		IFCAP_TSOv4)
    241 	, IFKW("tso6",		IFCAP_TSOv6)
    242 };
    243 
    244 extern struct pbranch command_root;
    245 extern struct pbranch opt_command;
    246 extern struct pbranch opt_family, opt_silent_family;
    247 extern struct pkw cloning, silent_family, family, ia6flags, ia6lifetime,
    248     ifcaps, ifflags, lists, misc;
    249 
    250 struct pinteger parse_metric = PINTEGER_INITIALIZER(&parse_metric, "metric", 10,
    251     setifmetric, "metric", &command_root.pb_parser);
    252 
    253 struct pinteger parse_mtu = PINTEGER_INITIALIZER(&parse_mtu, "mtu", 10,
    254     setifmtu, "mtu", &command_root.pb_parser);
    255 
    256 struct pinteger parse_prefixlen = PINTEGER_INITIALIZER(&parse_prefixlen,
    257     "prefixlen", 10, setifprefixlen, "prefixlen", &command_root.pb_parser);
    258 
    259 struct pinteger parse_preference = PINTEGER_INITIALIZER1(&parse_preference,
    260     "preference", INT16_MIN, INT16_MAX, 10, NULL, "preference",
    261     &command_root.pb_parser);
    262 
    263 struct paddr parse_netmask = PADDR_INITIALIZER(&parse_netmask, "netmask",
    264     setifnetmask, "dstormask", NULL, NULL, NULL, &command_root.pb_parser);
    265 
    266 struct paddr parse_broadcast = PADDR_INITIALIZER(&parse_broadcast,
    267     "broadcast address",
    268     setifbroadaddr, "broadcast", NULL, NULL, NULL, &command_root.pb_parser);
    269 
    270 struct pstr mediamode = PSTR_INITIALIZER(&mediamode, "mediamode",
    271     setmediamode, "mediamode", &command_root.pb_parser);
    272 
    273 struct pinteger mediainst = PINTEGER_INITIALIZER1(&mediainst, "mediainst",
    274     0, IFM_INST_MAX, 10, setmediainst, "mediainst", &command_root.pb_parser);
    275 
    276 struct pstr unmediaopt = PSTR_INITIALIZER(&unmediaopt, "-mediaopt",
    277     unsetmediaopt, "unmediaopt", &command_root.pb_parser);
    278 
    279 struct pstr mediaopt = PSTR_INITIALIZER(&mediaopt, "mediaopt",
    280     setmediaopt, "mediaopt", &command_root.pb_parser);
    281 
    282 struct pstr media = PSTR_INITIALIZER(&media, "media",
    283     setmedia, "media", &command_root.pb_parser);
    284 
    285 struct kwinst misckw[] = {
    286 	  {.k_word = "alias", .k_key = "alias", .k_deact = "alias",
    287 	   .k_type = KW_T_BOOL, .k_neg = true,
    288 	   .k_bool = true, .k_negbool = false,
    289 	   .k_exec = notealias, .k_nextparser = &command_root.pb_parser}
    290 	, {.k_word = "broadcast", .k_nextparser = &parse_broadcast.pa_parser}
    291 	, {.k_word = "delete", .k_key = "alias", .k_deact = "alias",
    292 	   .k_type = KW_T_BOOL, .k_bool = false, .k_exec = notealias,
    293 	   .k_nextparser = &command_root.pb_parser}
    294 	, {.k_word = "deletetunnel", .k_exec = deletetunnel,
    295 	   .k_nextparser = &command_root.pb_parser}
    296 	, {.k_word = "instance", .k_key = "anymedia", .k_type = KW_T_BOOL,
    297 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    298 	   .k_nextparser = &mediainst.pi_parser}
    299 	, {.k_word = "inst", .k_key = "anymedia", .k_type = KW_T_BOOL,
    300 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    301 	   .k_nextparser = &mediainst.pi_parser}
    302 	, {.k_word = "list", .k_nextparser = &lists.pk_parser}
    303 	, {.k_word = "media", .k_key = "anymedia", .k_type = KW_T_BOOL,
    304 	   .k_bool = true, .k_deact = "media", .k_altdeact = "anymedia",
    305 	   .k_nextparser = &media.ps_parser}
    306 	, {.k_word = "mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    307 	   .k_bool = true, .k_deact = "mediaopt", .k_altdeact = "instance",
    308 	   .k_nextparser = &mediaopt.ps_parser}
    309 	, {.k_word = "-mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    310 	   .k_bool = true, .k_deact = "unmediaopt", .k_altdeact = "media",
    311 	   .k_nextparser = &unmediaopt.ps_parser}
    312 	, {.k_word = "mode", .k_key = "anymedia", .k_type = KW_T_BOOL,
    313 	   .k_bool = true, .k_deact = "mode",
    314 	   .k_nextparser = &mediamode.ps_parser}
    315 	, {.k_word = "metric", .k_nextparser = &parse_metric.pi_parser}
    316 	, {.k_word = "mtu", .k_nextparser = &parse_mtu.pi_parser}
    317 	, {.k_word = "netmask", .k_nextparser = &parse_netmask.pa_parser}
    318 	, {.k_word = "preference", .k_act = "address",
    319 	   .k_nextparser = &parse_preference.pi_parser}
    320 	, {.k_word = "prefixlen", .k_nextparser = &parse_prefixlen.pi_parser}
    321 	, {.k_word = "trailers", .k_neg = true,
    322 	   .k_exec = notrailers, .k_nextparser = &command_root.pb_parser}
    323 	, {.k_word = "tunnel", .k_nextparser = &tunsrc.pa_parser}
    324 	, {.k_word = "vlan", .k_nextparser = &vlan.pi_parser}
    325 	, {.k_word = "vlanif", .k_act = "vlan",
    326 	   .k_nextparser = &vlanif.pif_parser}
    327 	, {.k_word = "-vlanif", .k_key = "vlanif", .k_type = KW_T_STR,
    328 	   .k_str = "", .k_exec = setvlanif}
    329 #ifndef INET_ONLY
    330 	, {.k_word = "phase", .k_nextparser = &phase.pi_parser}
    331 	, {.k_word = "range", .k_nextparser = &parse_range.ps_parser}
    332 	, {.k_word = "nsellength", .k_nextparser = &parse_nsellength.pi_parser}
    333 	, {.k_word = "snpaoffset", .k_nextparser = &parse_snpaoffset.pi_parser}
    334 	/* CARP */
    335 	, {.k_word = "advbase", .k_nextparser = &parse_advbase.pi_parser}
    336 	, {.k_word = "advskew", .k_nextparser = &parse_advskew.pi_parser}
    337 	, {.k_word = "carpdev", .k_nextparser = &carpdev.pif_parser}
    338 	, {.k_word = "-carpdev", .k_key = "carpdev", .k_type = KW_T_STR,
    339 	   .k_str = "", .k_exec = setcarpdev,
    340 	   .k_nextparser = &command_root.pb_parser}
    341 	, {.k_word = "pass", .k_nextparser = &pass.ps_parser}
    342 	, {.k_word = "state", .k_nextparser = &carpstate.pk_parser}
    343 	, {.k_word = "vhid", .k_nextparser = &parse_vhid.pi_parser}
    344 #endif
    345 #ifdef INET6
    346 	, {.k_word = "eui64", .k_exec = setia6eui64,
    347 	   .k_nextparser = &command_root.pb_parser}
    348 #endif /*INET6*/
    349 };
    350 
    351 /* key: clonecmd */
    352 struct kwinst clonekw[] = {
    353 	{.k_word = "create", .k_type = KW_T_NUM, .k_num = SIOCIFCREATE,
    354 	 .k_nextparser = &opt_silent_family.pb_parser},
    355 	{.k_word = "destroy", .k_type = KW_T_NUM, .k_num = SIOCIFDESTROY}
    356 };
    357 
    358 struct kwinst familykw[] = {
    359 	  {.k_word = "inet", .k_type = KW_T_NUM, .k_num = AF_INET,
    360 	   .k_nextparser = NULL}
    361 #ifdef INET6
    362 	, {.k_word = "inet6", .k_type = KW_T_NUM, .k_num = AF_INET6,
    363 	   .k_nextparser = NULL}
    364 #endif
    365 #ifndef INET_ONLY	/* small version, for boot media */
    366 	, {.k_word = "atalk", .k_type = KW_T_NUM, .k_num = AF_APPLETALK,
    367 	   .k_nextparser = NULL}
    368 	, {.k_word = "iso", .k_type = KW_T_NUM, .k_num = AF_ISO,
    369 	   .k_nextparser = NULL}
    370 #endif	/* INET_ONLY */
    371 };
    372 
    373 struct pterm cloneterm = PTERM_INITIALIZER(&cloneterm, "list cloners",
    374     list_cloners, "none");
    375 
    376 struct pterm no_cmds = PTERM_INITIALIZER(&no_cmds, "no commands", no_cmds_exec,
    377     "none");
    378 
    379 struct pkw family_only =
    380     PKW_INITIALIZER(&family_only, "family-only", NULL, "af", familykw,
    381 	__arraycount(familykw), &no_cmds.pt_parser);
    382 
    383 struct paddr address = PADDR_INITIALIZER(&address,
    384     "local address (address 1)",
    385     setifaddr, "address", "netmask", NULL, "address", &command_root.pb_parser);
    386 
    387 struct paddr dstormask = PADDR_INITIALIZER(&dstormask,
    388     "destination/netmask (address 2)",
    389     setifdstormask, "dstormask", NULL, "address", "dstormask",
    390     &command_root.pb_parser);
    391 
    392 struct paddr broadcast = PADDR_INITIALIZER(&broadcast,
    393     "broadcast address (address 3)",
    394     setifbroadaddr, "broadcast", NULL, "dstormask", "broadcast",
    395     &command_root.pb_parser);
    396 
    397 struct branch opt_clone_brs[] = {
    398 	  {.b_nextparser = &cloning.pk_parser}
    399 	, {.b_nextparser = &opt_family.pb_parser}
    400 }, opt_silent_family_brs[] = {
    401 	  {.b_nextparser = &silent_family.pk_parser}
    402 	, {.b_nextparser = &command_root.pb_parser}
    403 }, opt_family_brs[] = {
    404 	  {.b_nextparser = &family.pk_parser}
    405 	, {.b_nextparser = &opt_command.pb_parser}
    406 }, command_root_brs[] = {
    407 	  {.b_nextparser = &ieee80211bool.pk_parser}
    408 	, {.b_nextparser = &ifflags.pk_parser}
    409 	, {.b_nextparser = &ifcaps.pk_parser}
    410 #ifdef INET6
    411 	, {.b_nextparser = &ia6flags.pk_parser}
    412 	, {.b_nextparser = &ia6lifetime.pk_parser}
    413 #endif /*INET6*/
    414 	, {.b_nextparser = &misc.pk_parser}
    415 	, {.b_nextparser = &agr.pk_parser}
    416 	, {.b_nextparser = &kw80211.pk_parser}
    417 	, {.b_nextparser = &address.pa_parser}
    418 	, {.b_nextparser = &dstormask.pa_parser}
    419 	, {.b_nextparser = &broadcast.pa_parser}
    420 	, {.b_nextparser = NULL}
    421 }, opt_command_brs[] = {
    422 	  {.b_nextparser = &no_cmds.pt_parser}
    423 	, {.b_nextparser = &command_root.pb_parser}
    424 };
    425 
    426 struct branch opt_family_only_brs[] = {
    427 	  {.b_nextparser = &no_cmds.pt_parser}
    428 	, {.b_nextparser = &family_only.pk_parser}
    429 };
    430 struct pbranch opt_family_only = PBRANCH_INITIALIZER(&opt_family_only,
    431     "opt-family-only", opt_family_only_brs,
    432     __arraycount(opt_family_only_brs), true);
    433 struct pbranch opt_command = PBRANCH_INITIALIZER(&opt_command,
    434     "optional command",
    435     opt_command_brs, __arraycount(opt_command_brs), true);
    436 
    437 struct pbranch command_root = PBRANCH_INITIALIZER(&command_root,
    438     "command-root", command_root_brs, __arraycount(command_root_brs), true);
    439 
    440 struct piface iface_opt_family_only =
    441     PIFACE_INITIALIZER(&iface_opt_family_only, "iface-opt-family-only",
    442     NULL, "if", &opt_family_only.pb_parser);
    443 
    444 struct pkw family = PKW_INITIALIZER(&family, "family", NULL, "af",
    445     familykw, __arraycount(familykw), &opt_command.pb_parser);
    446 
    447 struct pkw silent_family = PKW_INITIALIZER(&silent_family, "silent family",
    448     NULL, "af", familykw, __arraycount(familykw), &command_root.pb_parser);
    449 
    450 #ifdef INET6
    451 struct kwinst ia6flagskw[] = {
    452 	  IFKW("anycast",	IN6_IFF_ANYCAST)
    453 	, IFKW("tentative",	IN6_IFF_TENTATIVE)
    454 	, IFKW("deprecated",	IN6_IFF_DEPRECATED)
    455 };
    456 
    457 struct pinteger pltime = PINTEGER_INITIALIZER(&pltime, "pltime", 0,
    458     setia6pltime, "pltime", &command_root.pb_parser);
    459 
    460 struct pinteger vltime = PINTEGER_INITIALIZER(&vltime, "vltime", 0,
    461     setia6vltime, "vltime", &command_root.pb_parser);
    462 
    463 struct kwinst ia6lifetimekw[] = {
    464 	  {.k_word = "pltime", .k_nextparser = &pltime.pi_parser}
    465 	, {.k_word = "vltime", .k_nextparser = &vltime.pi_parser}
    466 };
    467 
    468 struct pkw ia6flags = PKW_INITIALIZER(&ia6flags, "ia6flags", setia6flags,
    469     "ia6flag", ia6flagskw, __arraycount(ia6flagskw), &command_root.pb_parser);
    470 struct pkw ia6lifetime = PKW_INITIALIZER(&ia6lifetime, "ia6lifetime", NULL,
    471     NULL, ia6lifetimekw, __arraycount(ia6lifetimekw), NULL);
    472 #endif /*INET6*/
    473 
    474 struct pkw ifcaps = PKW_INITIALIZER(&ifcaps, "ifcaps", setifcaps,
    475     "ifcap", ifcapskw, __arraycount(ifcapskw), &command_root.pb_parser);
    476 
    477 struct pkw ifflags = PKW_INITIALIZER(&ifflags, "ifflags", setifflags,
    478     "ifflag", ifflagskw, __arraycount(ifflagskw), &command_root.pb_parser);
    479 
    480 struct pkw cloning = PKW_INITIALIZER(&cloning, "cloning", clone_command,
    481     "clonecmd", clonekw, __arraycount(clonekw), NULL);
    482 
    483 struct pkw misc = PKW_INITIALIZER(&misc, "misc", NULL, NULL,
    484     misckw, __arraycount(misckw), NULL);
    485 
    486 struct pbranch opt_clone = PBRANCH_INITIALIZER(&opt_clone,
    487     "opt-clone", opt_clone_brs, __arraycount(opt_clone_brs), true);
    488 
    489 struct pbranch opt_silent_family = PBRANCH_INITIALIZER(&opt_silent_family,
    490     "optional silent family", opt_silent_family_brs,
    491     __arraycount(opt_silent_family_brs), true);
    492 
    493 struct pbranch opt_family = PBRANCH_INITIALIZER(&opt_family,
    494     "opt-family", opt_family_brs, __arraycount(opt_family_brs), true);
    495 
    496 struct piface iface_start = PIFACE_INITIALIZER(&iface_start,
    497     "iface-opt-family", NULL, "if", &opt_clone.pb_parser);
    498 
    499 struct piface iface_only = PIFACE_INITIALIZER(&iface_only, "iface",
    500     media_status_exec, "if", NULL);
    501 
    502 static struct parser *
    503 init_parser(void)
    504 {
    505 	if (parser_init(&iface_opt_family_only.pif_parser) == -1)
    506 		err(EXIT_FAILURE, "parser_init(iface_opt_family_only)");
    507 	if (parser_init(&iface_only.pif_parser) == -1)
    508 		err(EXIT_FAILURE, "parser_init(iface_only)");
    509 	if (parser_init(&iface_start.pif_parser) == -1)
    510 		err(EXIT_FAILURE, "parser_init(iface_start)");
    511 
    512 	return &iface_start.pif_parser;
    513 }
    514 
    515 static int
    516 no_cmds_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    517 {
    518 	const char *ifname;
    519 	unsigned short ignore;
    520 
    521 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    522 	if ((ifname = getifname(env)) == NULL)
    523 		;
    524 	else if (getifflags(env, xenv, &ignore) == -1)
    525 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    526 
    527 	printall(ifname, env);
    528 	exit(EXIT_SUCCESS);
    529 }
    530 
    531 static int
    532 media_status_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    533 {
    534 	const char *ifname;
    535 	unsigned short ignore;
    536 
    537 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    538 	if ((ifname = getifname(env)) == NULL)
    539 		;
    540 	else if (getifflags(env, xenv, &ignore) == -1)
    541 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    542 
    543 	exit(carrier(env));
    544 }
    545 
    546 static void
    547 do_setifcaps(int s, const char *ifname, prop_dictionary_t env)
    548 {
    549 	struct ifcapreq ifcr;
    550 	prop_data_t d;
    551 
    552 	d = (prop_data_t )prop_dictionary_get(env, "ifcaps");
    553 	if (d == NULL)
    554 		return;
    555 
    556 	assert(sizeof(ifcr) == prop_data_size(d));
    557 
    558 	memcpy(&ifcr, prop_data_data_nocopy(d), sizeof(ifcr));
    559 	estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
    560 	if (ioctl(s, SIOCSIFCAP, &ifcr) == -1)
    561 		err(EXIT_FAILURE, "SIOCSIFCAP");
    562 }
    563 
    564 int
    565 main(int argc, char **argv)
    566 {
    567 	const struct afswtch *afp;
    568 	int af, aflag = 0, Cflag = 0, s;
    569 	struct match match[32];
    570 	size_t nmatch;
    571 	struct parser *start;
    572 	int ch, narg = 0, rc;
    573 	prop_dictionary_t env, xenv;
    574 	const char *ifname;
    575 
    576 	memset(match, 0, sizeof(match));
    577 
    578 	start = init_parser();
    579 
    580 	/* Parse command-line options */
    581 	aflag = mflag = vflag = zflag = 0;
    582 	while ((ch = getopt(argc, argv, "AabCdhlmsuvz"
    583 #ifdef INET6
    584 					"L"
    585 #endif
    586 			)) != -1) {
    587 		switch (ch) {
    588 		case 'A':
    589 			warnx("-A is deprecated");
    590 			break;
    591 
    592 		case 'a':
    593 			aflag = 1;
    594 			break;
    595 
    596 		case 'b':
    597 			bflag = 1;
    598 			break;
    599 
    600 		case 'C':
    601 			Cflag = 1;
    602 			break;
    603 
    604 		case 'd':
    605 			dflag = 1;
    606 			break;
    607 		case 'h':
    608 			hflag = 1;
    609 			break;
    610 #ifdef INET6
    611 		case 'L':
    612 			Lflag = 1;
    613 			break;
    614 #endif
    615 
    616 		case 'l':
    617 			lflag = 1;
    618 			break;
    619 
    620 		case 'm':
    621 			mflag = 1;
    622 			break;
    623 
    624 		case 's':
    625 			sflag = 1;
    626 			break;
    627 
    628 		case 'u':
    629 			uflag = 1;
    630 			break;
    631 
    632 		case 'v':
    633 			vflag = 1;
    634 			break;
    635 
    636 		case 'z':
    637 			zflag = 1;
    638 			break;
    639 
    640 
    641 		default:
    642 			usage();
    643 			/* NOTREACHED */
    644 		}
    645 		switch (ch) {
    646 		case 'a':
    647 			start = &opt_family_only.pb_parser;
    648 			break;
    649 
    650 #ifdef INET6
    651 		case 'L':
    652 #endif
    653 		case 'm':
    654 		case 'v':
    655 		case 'z':
    656 			if (start != &opt_family_only.pb_parser)
    657 				start = &iface_opt_family_only.pif_parser;
    658 			break;
    659 		case 'C':
    660 			start = &cloneterm.pt_parser;
    661 			break;
    662 		case 'l':
    663 			start = &no_cmds.pt_parser;
    664 			break;
    665 		case 's':
    666 			if (start != &no_cmds.pt_parser &&
    667 			    start != &opt_family_only.pb_parser)
    668 				start = &iface_only.pif_parser;
    669 			break;
    670 		default:
    671 			break;
    672 		}
    673 	}
    674 	argc -= optind;
    675 	argv += optind;
    676 
    677 	/*
    678 	 * -l means "list all interfaces", and is mutally exclusive with
    679 	 * all other flags/commands.
    680 	 *
    681 	 * -C means "list all names of cloners", and it mutually exclusive
    682 	 * with all other flags/commands.
    683 	 *
    684 	 * -a means "print status of all interfaces".
    685 	 */
    686 	if ((lflag || Cflag) && (aflag || mflag || vflag || zflag))
    687 		usage();
    688 #ifdef INET6
    689 	if ((lflag || Cflag) && Lflag)
    690 		usage();
    691 #endif
    692 	if (lflag && Cflag)
    693 		usage();
    694 
    695 	nmatch = __arraycount(match);
    696 
    697 	rc = parse(argc, argv, start, match, &nmatch, &narg);
    698 	if (rc != 0)
    699 		usage();
    700 
    701 	if ((xenv = prop_dictionary_create()) == NULL)
    702 		err(EXIT_FAILURE, "%s: prop_dictionary_create", __func__);
    703 
    704 	if (matches_exec(match, xenv, nmatch) == -1)
    705 		err(EXIT_FAILURE, "exec_matches");
    706 
    707 	argc -= narg;
    708 	argv += narg;
    709 
    710 	env = (nmatch > 0) ? match[(int)nmatch - 1].m_env : NULL;
    711 	if (env == NULL)
    712 		env = xenv;
    713 	else
    714 		env = prop_dictionary_augment(env, xenv);
    715 
    716 	/* Process any media commands that may have been issued. */
    717 	process_media_commands(env);
    718 
    719 	af = getaf(env);
    720 	switch (af) {
    721 #ifndef INET_ONLY
    722 	case AF_APPLETALK:
    723 		checkatrange(&at_addreq.ifra_addr);
    724 		break;
    725 #endif	/* INET_ONLY */
    726 	default:
    727 		break;
    728 	case -1:
    729 		af = AF_INET;
    730 		break;
    731 	}
    732 
    733 	if ((s = getsock(af)) == -1)
    734 		err(EXIT_FAILURE, "%s: getsock", __func__);
    735 
    736 	if ((ifname = getifname(env)) == NULL)
    737 		err(EXIT_FAILURE, "%s: getifname", __func__);
    738 
    739 	if ((afp = lookup_af_bynum(af)) == NULL)
    740 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
    741 
    742 	if (afp->af_addr_commit != NULL) {
    743 		(*afp->af_addr_commit)(env, xenv);
    744 	} else {
    745 		if (clearaddr) {
    746 			estrlcpy(afp->af_ridreq, ifname, IFNAMSIZ);
    747 			if (ioctl(s, afp->af_difaddr, afp->af_ridreq) == -1)
    748 				err(EXIT_FAILURE, "SIOCDIFADDR");
    749 		}
    750 		if (newaddr > 0) {
    751 			estrlcpy(afp->af_addreq, ifname, IFNAMSIZ);
    752 			if (ioctl(s, afp->af_aifaddr, afp->af_addreq) == -1)
    753 				warn("SIOCAIFADDR");
    754 			else if (check_up_state < 0)
    755 				check_up_state = 1;
    756 		}
    757 	}
    758 
    759 	do_setifpreference(env);
    760 	do_setifcaps(s, ifname, env);
    761 
    762 	if (check_up_state == 1)
    763 		check_ifflags_up(ifname);
    764 
    765 	exit(EXIT_SUCCESS);
    766 }
    767 
    768 const struct afswtch *
    769 lookup_af_bynum(int afnum)
    770 {
    771 	const struct afswtch *a;
    772 
    773 	for (a = afs; a->af_name != NULL; a++)
    774 		if (a->af_af == afnum)
    775 			return (a);
    776 	return (NULL);
    777 }
    778 
    779 void
    780 printall(const char *ifname, prop_dictionary_t env0)
    781 {
    782 	struct ifaddrs *ifap, *ifa;
    783 	struct ifreq ifr;
    784 	const struct sockaddr_dl *sdl = NULL;
    785 	prop_dictionary_t env, oenv;
    786 	int idx;
    787 	char *p;
    788 
    789 	if (env0 == NULL)
    790 		env = prop_dictionary_create();
    791 	else
    792 		env = prop_dictionary_copy_mutable(env0);
    793 
    794 	oenv = prop_dictionary_create();
    795 
    796 	if (env == NULL || oenv == NULL)
    797 		errx(EXIT_FAILURE, "%s: prop_dictionary_copy/create", __func__);
    798 
    799 	if (getifaddrs(&ifap) != 0)
    800 		err(EXIT_FAILURE, "getifaddrs");
    801 	p = NULL;
    802 	idx = 0;
    803 	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
    804 		memset(&ifr, 0, sizeof(ifr));
    805 		estrlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
    806 		if (sizeof(ifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
    807 			memcpy(&ifr.ifr_addr, ifa->ifa_addr,
    808 			    ifa->ifa_addr->sa_len);
    809 		}
    810 
    811 		if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
    812 			continue;
    813 		if (ifa->ifa_addr->sa_family == AF_LINK)
    814 			sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
    815 		if (p && strcmp(p, ifa->ifa_name) == 0)
    816 			continue;
    817 		if (!prop_dictionary_set_cstring(env, "if", ifa->ifa_name))
    818 			continue;
    819 		p = ifa->ifa_name;
    820 
    821 		if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0)
    822 			continue;
    823 		if (dflag && (ifa->ifa_flags & IFF_UP) != 0)
    824 			continue;
    825 		if (uflag && (ifa->ifa_flags & IFF_UP) == 0)
    826 			continue;
    827 
    828 		if (sflag && carrier(env))
    829 			continue;
    830 		idx++;
    831 		/*
    832 		 * Are we just listing the interfaces?
    833 		 */
    834 		if (lflag) {
    835 			if (idx > 1)
    836 				printf(" ");
    837 			fputs(ifa->ifa_name, stdout);
    838 			continue;
    839 		}
    840 
    841 		status(sdl, env, oenv);
    842 		sdl = NULL;
    843 	}
    844 	if (lflag)
    845 		printf("\n");
    846 	prop_object_release((prop_object_t)env);
    847 	prop_object_release((prop_object_t)oenv);
    848 	freeifaddrs(ifap);
    849 }
    850 
    851 int
    852 list_cloners(prop_dictionary_t env, prop_dictionary_t oenv)
    853 {
    854 	struct if_clonereq ifcr;
    855 	char *cp, *buf;
    856 	int idx, s;
    857 
    858 	memset(&ifcr, 0, sizeof(ifcr));
    859 
    860 	s = getsock(AF_INET);
    861 
    862 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    863 		err(EXIT_FAILURE, "SIOCIFGCLONERS for count");
    864 
    865 	buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
    866 	if (buf == NULL)
    867 		err(EXIT_FAILURE, "unable to allocate cloner name buffer");
    868 
    869 	ifcr.ifcr_count = ifcr.ifcr_total;
    870 	ifcr.ifcr_buffer = buf;
    871 
    872 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    873 		err(EXIT_FAILURE, "SIOCIFGCLONERS for names");
    874 
    875 	/*
    876 	 * In case some disappeared in the mean time, clamp it down.
    877 	 */
    878 	if (ifcr.ifcr_count > ifcr.ifcr_total)
    879 		ifcr.ifcr_count = ifcr.ifcr_total;
    880 
    881 	for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
    882 		if (idx > 0)
    883 			printf(" ");
    884 		printf("%s", cp);
    885 	}
    886 
    887 	printf("\n");
    888 	free(buf);
    889 	exit(EXIT_SUCCESS);
    890 }
    891 
    892 static int
    893 clone_command(prop_dictionary_t env, prop_dictionary_t xenv)
    894 {
    895 	struct ifreq ifreq;
    896 	int s;
    897 	int64_t cmd;
    898 	const char *ifname;
    899 
    900 	if (!prop_dictionary_get_int64(env, "clonecmd", &cmd)) {
    901 		errno = ENOENT;
    902 		return -1;
    903 	}
    904 
    905 	if ((ifname = getifname(env)) == NULL)
    906 		return -1;
    907 
    908 	/* We're called early... */
    909 	s = getsock(AF_INET);
    910 
    911 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
    912 	if (ioctl(s, (unsigned long)cmd, &ifreq) == -1) {
    913 		warn("%s", __func__);
    914 		return -1;
    915 	}
    916 	return 0;
    917 }
    918 
    919 /*ARGSUSED*/
    920 int
    921 setifaddr(prop_dictionary_t env, prop_dictionary_t xenv)
    922 {
    923 	struct ifreq *ifr;		/* XXX */
    924 	const struct paddr_prefix *pfx0;
    925 	struct paddr_prefix *pfx;
    926 	prop_data_t d;
    927 	const char *ifname;
    928 	int af, s;
    929 	const struct afswtch *afp;
    930 
    931 	if ((af = getaf(env)) == -1)
    932 		af = AF_INET;
    933 
    934 	if ((afp = lookup_af_bynum(af)) == NULL)
    935 		return -1;
    936 
    937 	d = (prop_data_t)prop_dictionary_get(env, "address");
    938 	assert(d != NULL);
    939 	pfx0 = prop_data_data_nocopy(d);
    940 
    941 	if (pfx0->pfx_len >= 0) {
    942 		pfx = prefixlen_to_mask(af, pfx0->pfx_len);
    943 		if (pfx == NULL)
    944 			err(EXIT_FAILURE, "prefixlen_to_mask");
    945 
    946 		if (afp->af_getaddr != NULL)
    947 			(*afp->af_getaddr)(pfx, MASK);
    948 		free(pfx);
    949 	}
    950 
    951 	if (afp->af_addr_commit != NULL)
    952 		return 0;
    953 
    954 	if ((ifname = getifname(env)) == NULL)
    955 		return -1;
    956 
    957 	/*
    958 	 * Delay the ioctl to set the interface addr until flags are all set.
    959 	 * The address interpretation may depend on the flags,
    960 	 * and the flags may change when the address is set.
    961 	 */
    962 	setaddr++;
    963 	if (newaddr == -1)
    964 		newaddr = 1;
    965 	if (doalias == 0 && afp->af_gifaddr != 0) {
    966 		ifr = (struct ifreq *)afp->af_ridreq;
    967 		estrlcpy(ifr->ifr_name, ifname, sizeof(ifr->ifr_name));
    968 		ifr->ifr_addr.sa_family = af;
    969 
    970 		if ((s = getsock(af)) == -1)
    971 			err(EXIT_FAILURE, "getsock");
    972 
    973 		if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0)
    974 			clearaddr = 1;
    975 		else if (errno == EADDRNOTAVAIL)
    976 			/* No address was assigned yet. */
    977 			;
    978 		else
    979 			err(EXIT_FAILURE, "SIOCGIFADDR");
    980 	}
    981 
    982 #if 0
    983 	int i;
    984 	for (i = 0; i < pfx0->pfx_addr.sa_len; i++)
    985 		printf(" %02x", ((const uint8_t *)&pfx->pfx_addr)[i]);
    986 	printf("\n");
    987 #endif
    988 	if (afp->af_getaddr != NULL)
    989 		(*afp->af_getaddr)(pfx0, (doalias >= 0 ? ADDR : RIDADDR));
    990 	return 0;
    991 }
    992 
    993 int
    994 setifnetmask(prop_dictionary_t env, prop_dictionary_t xenv)
    995 {
    996 	const struct paddr_prefix *pfx;
    997 	prop_data_t d;
    998 	int af;
    999 	const struct afswtch *afp;
   1000 
   1001 	if ((af = getaf(env)) == -1)
   1002 		af = AF_INET;
   1003 
   1004 	if ((afp = lookup_af_bynum(af)) == NULL)
   1005 		return -1;
   1006 
   1007 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1008 	assert(d != NULL);
   1009 	pfx = prop_data_data_nocopy(d);
   1010 
   1011 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1012 		return -1;
   1013 
   1014 	if (afp->af_getaddr != NULL)
   1015 		(*afp->af_getaddr)(pfx, MASK);
   1016 	return 0;
   1017 }
   1018 
   1019 int
   1020 setifbroadaddr(prop_dictionary_t env, prop_dictionary_t xenv)
   1021 {
   1022 	const struct paddr_prefix *pfx;
   1023 	prop_data_t d;
   1024 	int af;
   1025 	const struct afswtch *afp;
   1026 	unsigned short flags;
   1027 
   1028 	if ((af = getaf(env)) == -1)
   1029 		af = AF_INET;
   1030 
   1031 	if ((afp = lookup_af_bynum(af)) == NULL)
   1032 		return -1;
   1033 
   1034 	if (getifflags(env, xenv, &flags) == -1)
   1035 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1036 
   1037 	if ((flags & IFF_BROADCAST) == 0)
   1038 		errx(EXIT_FAILURE, "not a broadcast interface");
   1039 
   1040 	d = (prop_data_t)prop_dictionary_get(env, "broadcast");
   1041 	assert(d != NULL);
   1042 	pfx = prop_data_data_nocopy(d);
   1043 
   1044 	if (!prop_dictionary_set(xenv, "broadcast", (prop_object_t)d))
   1045 		return -1;
   1046 
   1047 	if (afp->af_getaddr != NULL)
   1048 		(*afp->af_getaddr)(pfx, DSTADDR);
   1049 
   1050 	return 0;
   1051 }
   1052 
   1053 #define rqtosa(__afp, __x) (&(((struct ifreq *)(__afp->__x))->ifr_addr))
   1054 
   1055 int
   1056 notealias(prop_dictionary_t env, prop_dictionary_t xenv)
   1057 {
   1058 	bool alias, delete;
   1059 	int af;
   1060 	const struct afswtch *afp;
   1061 
   1062 	if ((af = getaf(env)) == -1)
   1063 		af = AF_INET;
   1064 
   1065 	if ((afp = lookup_af_bynum(af)) == NULL)
   1066 		return -1;
   1067 
   1068 	if (afp->af_addr_commit != NULL)
   1069 		return 0;
   1070 
   1071 	if (!prop_dictionary_get_bool(env, "alias", &alias)) {
   1072 		errno = ENOENT;
   1073 		return -1;
   1074 	}
   1075 	delete = !alias;
   1076 	if (setaddr && doalias == 0 && delete)
   1077 		memcpy(rqtosa(afp, af_ridreq), rqtosa(afp, af_addreq),
   1078 		    rqtosa(afp, af_addreq)->sa_len);
   1079 	doalias = delete ? -1 : 1;
   1080 	if (delete) {
   1081 		clearaddr = 1;
   1082 		newaddr = 0;
   1083 	} else {
   1084 		clearaddr = 0;
   1085 	}
   1086 	return 0;
   1087 }
   1088 
   1089 /*ARGSUSED*/
   1090 int
   1091 notrailers(prop_dictionary_t env, prop_dictionary_t xenv)
   1092 {
   1093 	puts("Note: trailers are no longer sent, but always received");
   1094 	return 0;
   1095 }
   1096 
   1097 /*ARGSUSED*/
   1098 int
   1099 setifdstormask(prop_dictionary_t env, prop_dictionary_t xenv)
   1100 {
   1101 	const char *key;
   1102 	const struct paddr_prefix *pfx;
   1103 	prop_data_t d;
   1104 	int af, which;
   1105 	const struct afswtch *afp;
   1106 	unsigned short flags;
   1107 
   1108 	if ((af = getaf(env)) == -1)
   1109 		af = AF_INET;
   1110 
   1111 	if ((afp = lookup_af_bynum(af)) == NULL)
   1112 		return -1;
   1113 
   1114 	if (getifflags(env, xenv, &flags) == -1)
   1115 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1116 
   1117 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1118 	assert(d != NULL);
   1119 	pfx = prop_data_data_nocopy(d);
   1120 
   1121 	if ((flags & IFF_BROADCAST) == 0) {
   1122 		key = "dst";
   1123 		which = DSTADDR;
   1124 	} else {
   1125 		key = "netmask";
   1126 		which = MASK;
   1127 	}
   1128 
   1129 	if (!prop_dictionary_set(xenv, key, (prop_object_t)d))
   1130 		return -1;
   1131 
   1132 	if (afp->af_getaddr != NULL)
   1133 		(*afp->af_getaddr)(pfx, which);
   1134 	return 0;
   1135 }
   1136 
   1137 void
   1138 check_ifflags_up(const char *ifname)
   1139 {
   1140 	struct ifreq ifreq;
   1141 	int s;
   1142 
   1143 	s = getsock(AF_UNSPEC);
   1144 
   1145 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1146  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1147 		err(EXIT_FAILURE, "SIOCGIFFLAGS");
   1148 	if (ifreq.ifr_flags & IFF_UP)
   1149 		return;
   1150 	ifreq.ifr_flags |= IFF_UP;
   1151 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1152 		err(EXIT_FAILURE, "SIOCSIFFLAGS");
   1153 }
   1154 
   1155 int
   1156 setifflags(prop_dictionary_t env, prop_dictionary_t xenv)
   1157 {
   1158 	struct ifreq ifreq;
   1159 	int64_t ifflag;
   1160 	int s;
   1161 	bool rc;
   1162 	const char *ifname;
   1163 
   1164 	s = getsock(AF_INET);
   1165 
   1166 	rc = prop_dictionary_get_int64(env, "ifflag", &ifflag);
   1167 	assert(rc);
   1168 	if ((ifname = getifname(env)) == NULL)
   1169 		return -1;
   1170 
   1171 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1172  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1173 		return -1;
   1174 
   1175 	if (ifflag < 0) {
   1176 		ifflag = -ifflag;
   1177 		if (ifflag == IFF_UP)
   1178 			check_up_state = 0;
   1179 		ifreq.ifr_flags &= ~ifflag;
   1180 	} else
   1181 		ifreq.ifr_flags |= ifflag;
   1182 
   1183 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1184 		return -1;
   1185 
   1186 	return 0;
   1187 }
   1188 
   1189 static int
   1190 getifcaps(prop_dictionary_t env, prop_dictionary_t oenv, struct ifcapreq *oifcr)
   1191 {
   1192 	const char *ifname;
   1193 	bool rc;
   1194 	int s;
   1195 	struct ifcapreq ifcr;
   1196 	const struct ifcapreq *tmpifcr;
   1197 	prop_data_t capdata;
   1198 
   1199 	if ((s = getsock(AF_UNSPEC)) == -1)
   1200 		return -1;
   1201 
   1202 	if ((ifname = getifname(env)) == NULL)
   1203 		return -1;
   1204 
   1205 	capdata = (prop_data_t)prop_dictionary_get(env, "ifcaps");
   1206 
   1207 	if (capdata != NULL) {
   1208 		tmpifcr = prop_data_data_nocopy(capdata);
   1209 		*oifcr = *tmpifcr;
   1210 		return 0;
   1211 	}
   1212 
   1213 	estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
   1214 	(void)ioctl(s, SIOCGIFCAP, &ifcr);
   1215 	*oifcr = ifcr;
   1216 
   1217 	capdata = prop_data_create_data(&ifcr, sizeof(ifcr));
   1218 
   1219 	rc = prop_dictionary_set(oenv, "ifcaps", capdata);
   1220 
   1221 	prop_object_release((prop_object_t)capdata);
   1222 
   1223 	return rc ? 0 : -1;
   1224 }
   1225 
   1226 static int
   1227 setifcaps(prop_dictionary_t env, prop_dictionary_t oenv)
   1228 {
   1229 	int64_t ifcap;
   1230 	int s;
   1231 	bool rc;
   1232 	prop_data_t capdata;
   1233 	const char *ifname;
   1234 	struct ifcapreq ifcr;
   1235 
   1236 	s = getsock(AF_INET);
   1237 
   1238 	rc = prop_dictionary_get_int64(env, "ifcap", &ifcap);
   1239 	assert(rc);
   1240 
   1241 	if ((ifname = getifname(env)) == NULL)
   1242 		return -1;
   1243 
   1244 	if (getifcaps(env, oenv, &ifcr) == -1)
   1245 		return -1;
   1246 
   1247 	if (ifcap < 0) {
   1248 		ifcap = -ifcap;
   1249 		ifcr.ifcr_capenable &= ~ifcap;
   1250 	} else
   1251 		ifcr.ifcr_capenable |= ifcap;
   1252 
   1253 	if ((capdata = prop_data_create_data(&ifcr, sizeof(ifcr))) == NULL)
   1254 		return -1;
   1255 
   1256 	rc = prop_dictionary_set(oenv, "ifcaps", capdata);
   1257 	prop_object_release((prop_object_t)capdata);
   1258 
   1259 	return rc ? 0 : -1;
   1260 }
   1261 
   1262 static int
   1263 setifmetric(prop_dictionary_t env, prop_dictionary_t xenv)
   1264 {
   1265 	struct ifreq ifr;
   1266 	bool rc;
   1267 	const char *ifname;
   1268 	int s;
   1269 	int64_t metric;
   1270 
   1271 	if ((s = getsock(AF_UNSPEC)) == -1)
   1272 		return -1;
   1273 
   1274 	if ((ifname = getifname(env)) == NULL)
   1275 		return -1;
   1276 
   1277 	rc = prop_dictionary_get_int64(env, "metric", &metric);
   1278 	assert(rc);
   1279 
   1280 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1281 	ifr.ifr_metric = metric;
   1282 	if (ioctl(s, SIOCSIFMETRIC, &ifr) == -1)
   1283 		warn("SIOCSIFMETRIC");
   1284 	return 0;
   1285 }
   1286 
   1287 static void
   1288 do_setifpreference(prop_dictionary_t env)
   1289 {
   1290 	struct if_addrprefreq ifap;
   1291 	int af, s;
   1292 	const char *ifname;
   1293 	const struct afswtch *afp;
   1294 	prop_data_t d;
   1295 	const struct paddr_prefix *pfx;
   1296 
   1297 	if ((af = getaf(env)) == -1)
   1298 		af = AF_INET;
   1299 
   1300 	if ((afp = lookup_af_bynum(af)) == NULL)
   1301 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
   1302 
   1303 	memset(&ifap, 0, sizeof(ifap));
   1304 
   1305 	if (!prop_dictionary_get_int16(env, "preference",
   1306 	    &ifap.ifap_preference))
   1307 		return;
   1308 
   1309 	d = (prop_data_t)prop_dictionary_get(env, "address");
   1310 	assert(d != NULL);
   1311 
   1312 	pfx = prop_data_data_nocopy(d);
   1313 
   1314 	s = getsock(AF_UNSPEC);
   1315 
   1316 	if ((ifname = getifname(env)) == NULL)
   1317 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1318 
   1319 	strlcpy(ifap.ifap_name, ifname, sizeof(ifap.ifap_name));
   1320 	memcpy(&ifap.ifap_addr, &pfx->pfx_addr,
   1321 	    MIN(sizeof(ifap.ifap_addr), pfx->pfx_addr.sa_len));
   1322 	if (ioctl(s, SIOCSIFADDRPREF, &ifap) == -1)
   1323 		warn("SIOCSIFADDRPREF");
   1324 }
   1325 
   1326 static int
   1327 setifmtu(prop_dictionary_t env, prop_dictionary_t xenv)
   1328 {
   1329 	int64_t mtu;
   1330 	bool rc;
   1331 	const char *ifname;
   1332 	struct ifreq ifr;
   1333 	int s;
   1334 
   1335 	if ((s = getsock(AF_UNSPEC)) == -1)
   1336 		return -1;
   1337 
   1338 	if ((ifname = getifname(env)) == NULL)
   1339 		return -1;
   1340 
   1341 	rc = prop_dictionary_get_int64(env, "mtu", &mtu);
   1342 	assert(rc);
   1343 
   1344 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1345 	ifr.ifr_mtu = mtu;
   1346 	if (ioctl(s, SIOCSIFMTU, &ifr) == -1)
   1347 		warn("SIOCSIFMTU");
   1348 
   1349 	return 0;
   1350 }
   1351 
   1352 static void
   1353 media_error(int type, const char *val, const char *opt)
   1354 {
   1355 	errx(EXIT_FAILURE, "unknown %s media %s: %s",
   1356 		get_media_type_string(type), opt, val);
   1357 }
   1358 
   1359 void
   1360 init_current_media(prop_dictionary_t env, prop_dictionary_t oenv)
   1361 {
   1362 	struct ifmediareq ifmr;
   1363 	int s;
   1364 	const char *ifname;
   1365 
   1366 	if ((s = getsock(AF_UNSPEC)) == -1)
   1367 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1368 
   1369 	if ((ifname = getifname(env)) == NULL)
   1370 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1371 
   1372 	/*
   1373 	 * If we have not yet done so, grab the currently-selected
   1374 	 * media.
   1375 	 */
   1376 
   1377 	if (prop_dictionary_get(env, "initmedia") == NULL) {
   1378 		memset(&ifmr, 0, sizeof(ifmr));
   1379 		estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1380 
   1381 		if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1382 			/*
   1383 			 * If we get E2BIG, the kernel is telling us
   1384 			 * that there are more, so we can ignore it.
   1385 			 */
   1386 			if (errno != E2BIG)
   1387 				err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1388 		}
   1389 
   1390 		if (!prop_dictionary_set_bool(oenv, "initmedia", true)) {
   1391 			err(EXIT_FAILURE, "%s: prop_dictionary_set_bool",
   1392 			    __func__);
   1393 		}
   1394 		media_current = ifmr.ifm_current;
   1395 	}
   1396 
   1397 	/* Sanity. */
   1398 	if (IFM_TYPE(media_current) == 0)
   1399 		errx(EXIT_FAILURE, "%s: no link type?", ifname);
   1400 }
   1401 
   1402 void
   1403 process_media_commands(prop_dictionary_t env)
   1404 {
   1405 	struct ifreq ifr;
   1406 	const char *ifname;
   1407 	int s;
   1408 
   1409 	if ((s = getsock(AF_UNSPEC)) == -1)
   1410 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1411 
   1412 	if (prop_dictionary_get(env, "media") == NULL &&
   1413 	    prop_dictionary_get(env, "mediaopt") == NULL &&
   1414 	    prop_dictionary_get(env, "unmediaopt") == NULL &&
   1415 	    prop_dictionary_get(env, "mediamode") == NULL) {
   1416 		/* Nothing to do. */
   1417 		return;
   1418 	}
   1419 
   1420 	if ((ifname = getifname(env)) == NULL)
   1421 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1422 
   1423 	/*
   1424 	 * Media already set up, and commands sanity-checked.  Set/clear
   1425 	 * any options, and we're ready to go.
   1426 	 */
   1427 	media_current |= mediaopt_set;
   1428 	media_current &= ~mediaopt_clear;
   1429 
   1430 	memset(&ifr, 0, sizeof(ifr));
   1431 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1432 	ifr.ifr_media = media_current;
   1433 
   1434 	if (ioctl(s, SIOCSIFMEDIA, &ifr) == -1)
   1435 		err(EXIT_FAILURE, "SIOCSIFMEDIA");
   1436 }
   1437 
   1438 int
   1439 setmedia(prop_dictionary_t env, prop_dictionary_t xenv)
   1440 {
   1441 	int type, subtype, inst;
   1442 	prop_data_t data;
   1443 	char *val;
   1444 
   1445 	init_current_media(env, xenv);
   1446 
   1447 	data = (prop_data_t)prop_dictionary_get(env, "media");
   1448 	assert(data != NULL);
   1449 
   1450 	/* Only one media command may be given. */
   1451 	/* Must not come after mode commands */
   1452 	/* Must not come after mediaopt commands */
   1453 
   1454 	/*
   1455 	 * No need to check if `instance' has been issued; setmediainst()
   1456 	 * craps out if `media' has not been specified.
   1457 	 */
   1458 
   1459 	type = IFM_TYPE(media_current);
   1460 	inst = IFM_INST(media_current);
   1461 
   1462 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1463 	if (val == NULL)
   1464 		return -1;
   1465 
   1466 	/* Look up the subtype. */
   1467 	subtype = get_media_subtype(type, val);
   1468 	if (subtype == -1)
   1469 		media_error(type, val, "subtype");
   1470 
   1471 	/* Build the new current media word. */
   1472 	media_current = IFM_MAKEWORD(type, subtype, 0, inst);
   1473 
   1474 	/* Media will be set after other processing is complete. */
   1475 	return 0;
   1476 }
   1477 
   1478 int
   1479 setmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1480 {
   1481 	char *invalid;
   1482 	prop_data_t data;
   1483 	char *val;
   1484 
   1485 	init_current_media(env, xenv);
   1486 
   1487 	data = (prop_data_t)prop_dictionary_get(env, "mediaopt");
   1488 	assert(data != NULL);
   1489 
   1490 	/* Can only issue `mediaopt' once. */
   1491 	/* Can't issue `mediaopt' if `instance' has already been issued. */
   1492 
   1493 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1494 	if (val == NULL)
   1495 		return -1;
   1496 
   1497 	mediaopt_set = get_media_options(media_current, val, &invalid);
   1498 	free(val);
   1499 	if (mediaopt_set == -1)
   1500 		media_error(media_current, invalid, "option");
   1501 
   1502 	/* Media will be set after other processing is complete. */
   1503 	return 0;
   1504 }
   1505 
   1506 int
   1507 unsetmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1508 {
   1509 	char *invalid, *val;
   1510 	prop_data_t data;
   1511 
   1512 	init_current_media(env, xenv);
   1513 
   1514 	data = (prop_data_t)prop_dictionary_get(env, "unmediaopt");
   1515 	if (data == NULL) {
   1516 		errno = ENOENT;
   1517 		return -1;
   1518 	}
   1519 
   1520 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1521 	if (val == NULL)
   1522 		return -1;
   1523 
   1524 	/*
   1525 	 * No need to check for A_MEDIAINST, since the test for A_MEDIA
   1526 	 * implicitly checks for A_MEDIAINST.
   1527 	 */
   1528 
   1529 	mediaopt_clear = get_media_options(media_current, val, &invalid);
   1530 	free(val);
   1531 	if (mediaopt_clear == -1)
   1532 		media_error(media_current, invalid, "option");
   1533 
   1534 	/* Media will be set after other processing is complete. */
   1535 	return 0;
   1536 }
   1537 
   1538 int
   1539 setmediainst(prop_dictionary_t env, prop_dictionary_t xenv)
   1540 {
   1541 	int type, subtype, options;
   1542 	int64_t inst;
   1543 	bool rc;
   1544 
   1545 	init_current_media(env, xenv);
   1546 
   1547 	rc = prop_dictionary_get_int64(env, "mediainst", &inst);
   1548 	assert(rc);
   1549 
   1550 	/* Can only issue `instance' once. */
   1551 	/* Must have already specified `media' */
   1552 
   1553 	type = IFM_TYPE(media_current);
   1554 	subtype = IFM_SUBTYPE(media_current);
   1555 	options = IFM_OPTIONS(media_current);
   1556 
   1557 	media_current = IFM_MAKEWORD(type, subtype, options, inst);
   1558 
   1559 	/* Media will be set after other processing is complete. */
   1560 	return 0;
   1561 }
   1562 
   1563 int
   1564 setmediamode(prop_dictionary_t env, prop_dictionary_t xenv)
   1565 {
   1566 	int type, subtype, options, inst, mode;
   1567 	prop_data_t data;
   1568 	char *val;
   1569 
   1570 	init_current_media(env, xenv);
   1571 
   1572 	data = (prop_data_t)prop_dictionary_get(env, "mediamode");
   1573 	assert(data != NULL);
   1574 
   1575 	type = IFM_TYPE(media_current);
   1576 	subtype = IFM_SUBTYPE(media_current);
   1577 	options = IFM_OPTIONS(media_current);
   1578 	inst = IFM_INST(media_current);
   1579 
   1580 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1581 	if (val == NULL)
   1582 		return -1;
   1583 
   1584 	mode = get_media_mode(type, val);
   1585 	if (mode == -1)
   1586 		media_error(type, val, "mode");
   1587 
   1588 	free(val);
   1589 
   1590 	media_current = IFM_MAKEWORD(type, subtype, options, inst) | mode;
   1591 
   1592 	/* Media will be set after other processing is complete. */
   1593 	return 0;
   1594 }
   1595 
   1596 void
   1597 print_media_word(int ifmw, const char *opt_sep)
   1598 {
   1599 	const char *str;
   1600 
   1601 	printf("%s", get_media_subtype_string(ifmw));
   1602 
   1603 	/* Find mode. */
   1604 	if (IFM_MODE(ifmw) != 0) {
   1605 		str = get_media_mode_string(ifmw);
   1606 		if (str != NULL)
   1607 			printf(" mode %s", str);
   1608 	}
   1609 
   1610 	/* Find options. */
   1611 	for (; (str = get_media_option_string(&ifmw)) != NULL; opt_sep = ",")
   1612 		printf("%s%s", opt_sep, str);
   1613 
   1614 	if (IFM_INST(ifmw) != 0)
   1615 		printf(" instance %d", IFM_INST(ifmw));
   1616 }
   1617 
   1618 int
   1619 carrier(prop_dictionary_t env)
   1620 {
   1621 	struct ifmediareq ifmr;
   1622 	int s;
   1623 	const char *ifname;
   1624 
   1625 	if ((s = getsock(AF_UNSPEC)) == -1)
   1626 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1627 
   1628 	if ((ifname = getifname(env)) == NULL)
   1629 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1630 
   1631 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1632 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1633 
   1634 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1635 		/*
   1636 		 * Interface doesn't support SIOC{G,S}IFMEDIA;
   1637 		 * assume ok.
   1638 		 */
   1639 		return EXIT_SUCCESS;
   1640 	}
   1641 	if ((ifmr.ifm_status & IFM_AVALID) == 0) {
   1642 		/*
   1643 		 * Interface doesn't report media-valid status.
   1644 		 * assume ok.
   1645 		 */
   1646 		return EXIT_SUCCESS;
   1647 	}
   1648 	/* otherwise, return ok for active, not-ok if not active. */
   1649 	if (ifmr.ifm_status & IFM_ACTIVE)
   1650 		return EXIT_SUCCESS;
   1651 	else
   1652 		return EXIT_FAILURE;
   1653 }
   1654 
   1655 const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;
   1656 
   1657 const struct ifmedia_status_description ifm_status_descriptions[] =
   1658     IFM_STATUS_DESCRIPTIONS;
   1659 
   1660 /*
   1661  * Print the status of the interface.  If an address family was
   1662  * specified, show it and it only; otherwise, show them all.
   1663  */
   1664 void
   1665 status(const struct sockaddr_dl *sdl, prop_dictionary_t env,
   1666     prop_dictionary_t oenv)
   1667 {
   1668 	struct ifmediareq ifmr;
   1669 	struct ifdatareq ifdr;
   1670 	struct ifreq ifr;
   1671 	int *media_list, i;
   1672 	char hbuf[NI_MAXHOST];
   1673 	char fbuf[BUFSIZ];
   1674 	int af, s;
   1675 	const char *ifname;
   1676 	struct ifcapreq ifcr;
   1677 	unsigned short flags;
   1678 	const struct afswtch *afp;
   1679 
   1680 	if ((af = getaf(env)) == -1) {
   1681 		afp = NULL;
   1682 		af = AF_UNSPEC;
   1683 	} else
   1684 		afp = lookup_af_bynum(af);
   1685 
   1686 	if ((s = getsock(af)) == -1)
   1687 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1688 
   1689 	if ((ifname = getifinfo(env, oenv, &flags)) == NULL)
   1690 		err(EXIT_FAILURE, "%s: getifinfo", __func__);
   1691 
   1692 	(void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags);
   1693 	printf("%s: flags=%s", ifname, &fbuf[2]);
   1694 
   1695 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1696 	if (ioctl(s, SIOCGIFMETRIC, &ifr) == -1)
   1697 		warn("SIOCGIFMETRIC %s", ifr.ifr_name);
   1698 	else if (ifr.ifr_metric != 0)
   1699 		printf(" metric %d", ifr.ifr_metric);
   1700 
   1701 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1702 	if (ioctl(s, SIOCGIFMTU, &ifr) != -1 && ifr.ifr_mtu != 0)
   1703 		printf(" mtu %d", ifr.ifr_mtu);
   1704 	printf("\n");
   1705 
   1706 	if (getifcaps(env, oenv, &ifcr) == -1)
   1707 		err(EXIT_FAILURE, "%s: getifcaps", __func__);
   1708 
   1709 	if (ifcr.ifcr_capabilities != 0) {
   1710 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1711 		    ifcr.ifcr_capabilities);
   1712 		printf("\tcapabilities=%s\n", &fbuf[2]);
   1713 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1714 		    ifcr.ifcr_capenable);
   1715 		printf("\tenabled=%s\n", &fbuf[2]);
   1716 	}
   1717 
   1718 	ieee80211_status(env, oenv);
   1719 	vlan_status(env, oenv);
   1720 #ifndef INET_ONLY
   1721 	carp_status(env, oenv);
   1722 #endif
   1723 	tunnel_status(env, oenv);
   1724 	agr_status(env, oenv);
   1725 
   1726 	if (sdl != NULL &&
   1727 	    getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len,
   1728 		hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 &&
   1729 	    hbuf[0] != '\0')
   1730 		printf("\taddress: %s\n", hbuf);
   1731 
   1732 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1733 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1734 
   1735 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1736 		/*
   1737 		 * Interface doesn't support SIOC{G,S}IFMEDIA.
   1738 		 */
   1739 		goto iface_stats;
   1740 	}
   1741 
   1742 	if (ifmr.ifm_count == 0) {
   1743 		warnx("%s: no media types?", ifname);
   1744 		goto iface_stats;
   1745 	}
   1746 
   1747 	media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
   1748 	if (media_list == NULL)
   1749 		err(EXIT_FAILURE, "malloc");
   1750 	ifmr.ifm_ulist = media_list;
   1751 
   1752 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1)
   1753 		err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1754 
   1755 	printf("\tmedia: %s ", get_media_type_string(ifmr.ifm_current));
   1756 	print_media_word(ifmr.ifm_current, " ");
   1757 	if (ifmr.ifm_active != ifmr.ifm_current) {
   1758 		printf(" (");
   1759 		print_media_word(ifmr.ifm_active, " ");
   1760 		printf(")");
   1761 	}
   1762 	printf("\n");
   1763 
   1764 	if (ifmr.ifm_status & IFM_STATUS_VALID) {
   1765 		const struct ifmedia_status_description *ifms;
   1766 		int bitno, found = 0;
   1767 
   1768 		printf("\tstatus: ");
   1769 		for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) {
   1770 			for (ifms = ifm_status_descriptions;
   1771 			     ifms->ifms_valid != 0; ifms++) {
   1772 				if (ifms->ifms_type !=
   1773 				      IFM_TYPE(ifmr.ifm_current) ||
   1774 				    ifms->ifms_valid !=
   1775 				      ifm_status_valid_list[bitno])
   1776 					continue;
   1777 				printf("%s%s", found ? ", " : "",
   1778 				    IFM_STATUS_DESC(ifms, ifmr.ifm_status));
   1779 				found = 1;
   1780 
   1781 				/*
   1782 				 * For each valid indicator bit, there's
   1783 				 * only one entry for each media type, so
   1784 				 * terminate the inner loop now.
   1785 				 */
   1786 				break;
   1787 			}
   1788 		}
   1789 
   1790 		if (found == 0)
   1791 			printf("unknown");
   1792 		printf("\n");
   1793 	}
   1794 
   1795 	if (mflag) {
   1796 		int type, printed_type;
   1797 
   1798 		for (type = IFM_NMIN; type <= IFM_NMAX; type += IFM_NMIN) {
   1799 			for (i = 0, printed_type = 0; i < ifmr.ifm_count; i++) {
   1800 				if (IFM_TYPE(media_list[i]) != type)
   1801 					continue;
   1802 				if (printed_type == 0) {
   1803 					printf("\tsupported %s media:\n",
   1804 					    get_media_type_string(type));
   1805 					printed_type = 1;
   1806 				}
   1807 				printf("\t\tmedia ");
   1808 				print_media_word(media_list[i], " mediaopt ");
   1809 				printf("\n");
   1810 			}
   1811 		}
   1812 	}
   1813 
   1814 	free(media_list);
   1815 
   1816  iface_stats:
   1817 	if (!vflag && !zflag)
   1818 		goto proto_status;
   1819 
   1820 	estrlcpy(ifdr.ifdr_name, ifname, sizeof(ifdr.ifdr_name));
   1821 
   1822 	if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) {
   1823 		err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA");
   1824 	} else {
   1825 		struct if_data * const ifi = &ifdr.ifdr_data;
   1826 		char buf[5];
   1827 
   1828 #define	PLURAL(n)	((n) == 1 ? "" : "s")
   1829 #define PLURALSTR(s)	((atof(s)) == 1.0 ? "" : "s")
   1830 		printf("\tinput: %llu packet%s, ",
   1831 		    (unsigned long long) ifi->ifi_ipackets,
   1832 		    PLURAL(ifi->ifi_ipackets));
   1833 		if (hflag) {
   1834 			(void) humanize_number(buf, sizeof(buf),
   1835 			    (int64_t) ifi->ifi_ibytes, "", HN_AUTOSCALE,
   1836 			    HN_NOSPACE | HN_DECIMAL);
   1837 			printf("%s byte%s", buf,
   1838 			    PLURALSTR(buf));
   1839 		} else
   1840 			printf("%llu byte%s",
   1841 			    (unsigned long long) ifi->ifi_ibytes,
   1842 		            PLURAL(ifi->ifi_ibytes));
   1843 		if (ifi->ifi_imcasts)
   1844 			printf(", %llu multicast%s",
   1845 			    (unsigned long long) ifi->ifi_imcasts,
   1846 			    PLURAL(ifi->ifi_imcasts));
   1847 		if (ifi->ifi_ierrors)
   1848 			printf(", %llu error%s",
   1849 			    (unsigned long long) ifi->ifi_ierrors,
   1850 			    PLURAL(ifi->ifi_ierrors));
   1851 		if (ifi->ifi_iqdrops)
   1852 			printf(", %llu queue drop%s",
   1853 			    (unsigned long long) ifi->ifi_iqdrops,
   1854 			    PLURAL(ifi->ifi_iqdrops));
   1855 		if (ifi->ifi_noproto)
   1856 			printf(", %llu unknown protocol",
   1857 			    (unsigned long long) ifi->ifi_noproto);
   1858 		printf("\n\toutput: %llu packet%s, ",
   1859 		    (unsigned long long) ifi->ifi_opackets,
   1860 		    PLURAL(ifi->ifi_opackets));
   1861 		if (hflag) {
   1862 			(void) humanize_number(buf, sizeof(buf),
   1863 			    (int64_t) ifi->ifi_obytes, "", HN_AUTOSCALE,
   1864 			    HN_NOSPACE | HN_DECIMAL);
   1865 			printf("%s byte%s", buf,
   1866 			    PLURALSTR(buf));
   1867 		} else
   1868 			printf("%llu byte%s",
   1869 			    (unsigned long long) ifi->ifi_obytes,
   1870 			    PLURAL(ifi->ifi_obytes));
   1871 		if (ifi->ifi_omcasts)
   1872 			printf(", %llu multicast%s",
   1873 			    (unsigned long long) ifi->ifi_omcasts,
   1874 			    PLURAL(ifi->ifi_omcasts));
   1875 		if (ifi->ifi_oerrors)
   1876 			printf(", %llu error%s",
   1877 			    (unsigned long long) ifi->ifi_oerrors,
   1878 			    PLURAL(ifi->ifi_oerrors));
   1879 		if (ifi->ifi_collisions)
   1880 			printf(", %llu collision%s",
   1881 			    (unsigned long long) ifi->ifi_collisions,
   1882 			    PLURAL(ifi->ifi_collisions));
   1883 		printf("\n");
   1884 #undef PLURAL
   1885 #undef PLURALSTR
   1886 	}
   1887 
   1888 	ieee80211_statistics(env);
   1889 
   1890  proto_status:
   1891 
   1892 	if (afp != NULL)
   1893 		(*afp->af_status)(env, oenv, true);
   1894 	else for (afp = afs; afp->af_name != NULL; afp++)
   1895 		(*afp->af_status)(env, oenv, false);
   1896 }
   1897 
   1898 int
   1899 setifprefixlen(prop_dictionary_t env, prop_dictionary_t xenv)
   1900 {
   1901 	const char *ifname;
   1902 	bool rc;
   1903 	int64_t plen;
   1904 	int af;
   1905 	const struct afswtch *afp;
   1906 	unsigned short flags;
   1907 	struct paddr_prefix *pfx;
   1908 	prop_data_t d;
   1909 
   1910 	if ((af = getaf(env)) == -1)
   1911 		af = AF_INET;
   1912 
   1913 	if ((afp = lookup_af_bynum(af)) == NULL)
   1914 		return -1;
   1915 
   1916 	if ((ifname = getifinfo(env, xenv, &flags)) == NULL)
   1917 		err(EXIT_FAILURE, "getifinfo");
   1918 
   1919 	rc = prop_dictionary_get_int64(env, "prefixlen", &plen);
   1920 	assert(rc);
   1921 
   1922 	pfx = prefixlen_to_mask(af, plen);
   1923 	if (pfx == NULL)
   1924 		err(EXIT_FAILURE, "prefixlen_to_mask");
   1925 
   1926 	d = prop_data_create_data(pfx,
   1927 	    offsetof(struct paddr_prefix, pfx_addr) + pfx->pfx_addr.sa_len);
   1928 	if (d == NULL)
   1929 		err(EXIT_FAILURE, "%s: prop_data_create_data", __func__);
   1930 
   1931 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1932 		err(EXIT_FAILURE, "%s: prop_dictionary_set", __func__);
   1933 
   1934 	if (afp->af_getaddr != NULL)
   1935 		(*afp->af_getaddr)(pfx, MASK);
   1936 
   1937 	free(pfx);
   1938 	return 0;
   1939 }
   1940 
   1941 void
   1942 usage(void)
   1943 {
   1944 	const char *progname = getprogname();
   1945 
   1946 	fprintf(stderr,
   1947 	    "usage: %s [-h] [-m] [-v] [-z] "
   1948 #ifdef INET6
   1949 		"[-L] "
   1950 #endif
   1951 		"interface\n"
   1952 		"\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n"
   1953 		"\t\t[ alias | -alias ] ]\n"
   1954 		"\t[ up ] [ down ] [ metric n ] [ mtu n ]\n"
   1955 		"\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n"
   1956 		"\t[ list scan ]\n"
   1957 		"\t[ powersave | -powersave ] [ powersavesleep duration ]\n"
   1958 		"\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n"
   1959 		"\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n"
   1960 		"\t[ arp | -arp ]\n"
   1961 		"\t[ media type ] [ mediaopt opts ] [ -mediaopt opts ] "
   1962 		"[ instance minst ]\n"
   1963 		"\t[ preference n ]\n"
   1964 		"\t[ vlan n vlanif i ]\n"
   1965 		"\t[ agrport i ] [ -agrport i ]\n"
   1966 		"\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n"
   1967 		"\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] [ eui64 ]\n"
   1968 		"\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n"
   1969 		"       %s -a [-b] [-h] [-m] [-d] [-u] [-v] [-z] [ af ]\n"
   1970 		"       %s -l [-b] [-d] [-u] [-s]\n"
   1971 		"       %s -C\n"
   1972 		"       %s interface create\n"
   1973 		"       %s interface destroy\n",
   1974 		progname, progname, progname, progname, progname, progname);
   1975 	exit(EXIT_FAILURE);
   1976 }
   1977